diff options
Diffstat (limited to 'src/utils')
-rw-r--r-- | src/utils/info.txt | 2 | ||||
-rw-r--r-- | src/utils/time.cpp | 87 | ||||
-rw-r--r-- | src/utils/time.h | 30 |
3 files changed, 118 insertions, 1 deletions
diff --git a/src/utils/info.txt b/src/utils/info.txt index 3d024fa09..110afeb64 100644 --- a/src/utils/info.txt +++ b/src/utils/info.txt @@ -3,5 +3,5 @@ define UTIL_FUNCTIONS load_on always <libs> -tru64 -> rt +linux,tru64 -> rt </libs> diff --git a/src/utils/time.cpp b/src/utils/time.cpp new file mode 100644 index 000000000..856b1c7be --- /dev/null +++ b/src/utils/time.cpp @@ -0,0 +1,87 @@ +/** +* Time Functions +* (C) 1999-2009 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#include <botan/time.h> +#include <botan/exceptn.h> +#include <ctime> + +#if defined(BOTAN_TARGET_OS_HAS_GETTIMEOFDAY) + #include <sys/time.h> +#endif + +#if defined(BOTAN_TARGET_OS_HAS_CLOCK_GETTIME) + +#ifndef _POSIX_C_SOURCE + #define _POSIX_C_SOURCE 199309 +#endif + +#include <time.h> + +#ifndef CLOCK_REALTIME + #define CLOCK_REALTIME 0 +#endif + +#endif + +namespace Botan { + +namespace { + +/** +* Combine a two time values into a single one +*/ +u64bit combine_timers(u32bit seconds, u32bit parts, u32bit parts_hz) + { + static const u64bit NANOSECONDS_UNITS = 1000000000; + + u64bit res = seconds * NANOSECONDS_UNITS; + res += parts * (NANOSECONDS_UNITS / parts_hz); + return res; + } + +} + +/** +* Get the system clock +*/ +u64bit system_time() + { + return static_cast<u64bit>(std::time(0)); + } + +/* +* Convert a time_t to a struct tm +*/ +std::tm time_t_to_tm(u64bit timer) + { + std::time_t time_val = static_cast<std::time_t>(timer); + + std::tm* tm_p = std::gmtime(&time_val); + if (tm_p == 0) + throw Encoding_Error("time_t_to_tm could not convert"); + return (*tm_p); + } + +u64bit get_nanoseconds_clock() + { +#if defined(BOTAN_TARGET_OS_HAS_CLOCK_GETTIME) + struct ::timespec tv; + ::clock_gettime(CLOCK_REALTIME, &tv); + return combine_timers(tv.tv_sec, tv.tv_nsec, 1000000000); + +#elif defined(BOTAN_TARGET_OS_HAS_GETTIMEOFDAY) + struct ::timeval tv; + ::gettimeofday(&tv, 0); + return combine_timers(tv.tv_sec, tv.tv_usec, 1000000); + +#else + return combine_timers(std::time(0), std::clock(), CLOCKS_PER_SEC); + +#endif + } + +} diff --git a/src/utils/time.h b/src/utils/time.h new file mode 100644 index 000000000..c7f459096 --- /dev/null +++ b/src/utils/time.h @@ -0,0 +1,30 @@ +/** +* Time Functions +* (C) 1999-2009 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#ifndef BOTAN_TIME_H__ +#define BOTAN_TIME_H__ + +#include <botan/types.h> +#include <ctime> + +namespace Botan { + +/* +* Time Access/Conversion Functions +*/ +BOTAN_DLL u64bit system_time(); + +BOTAN_DLL std::tm time_t_to_tm(u64bit); + +/** +@return nanoseconds resolution timestamp, unknown epoch +*/ +BOTAN_DLL u64bit get_nanoseconds_clock(); + +} + +#endif |